Implement SSH key deployment feature with credential resolution

- Add SSH key deployment endpoint supporting all authentication types
- Implement automatic credential resolution for credential-based hosts
- Add deployment UI with host selection and progress tracking
- Support password, key, and credential authentication methods
- Include deployment verification and error handling
- Add public key field to credential types and API responses
- Implement secure SSH connection handling with proper timeout

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/types/index.ts

@@ -70,6 +70,7 @@ export interface Credential {
   username: string;
   password?: string;
   key?: string;
+  publicKey?: string;
   keyPassword?: string;
   keyType?: string;
   usageCount: number;
@@ -87,6 +88,7 @@ export interface CredentialData {
   username: string;
   password?: string;
   key?: string;
+  publicKey?: string;
   keyPassword?: string;
   keyType?: string;
 }